<template>

  <div class="list" ref="wrapper">
      <div>
    <div class="area">
      <div class="title border-topbottom">当前城市</div>
      <div class="button-list">
        <div class="button-wrapper">
          <div class="button">北京</div>
        </div>

      </div>
    </div>

    <div class="area">
      <div class="title border-topbottom" >热门城市</div>
      <div class="button-list">
        <div class="button-wrapper" v-for="item of hotCities" :key="item.id">
          <div class="button">{{item.name}}</div>
        </div>
   
      </div>
    </div>
    <div class="area" :ref="key" v-for="(item,key) of cities" :key="key">
      <div class="title border-topbottom">{{key}}</div>
      <div class="item-list">
          <div class="item border-bottom" v-for="innerItem of item" :key="innerItem.id">{{innerItem.name}}</div>
         
      </div>

   
    </div>
  </div>
</div>
</template>

<script>
    import Bscroll from 'better-scroll'
  export default {
    name: 'CityList',
    props:{
      cities:Object,
      hotCities:Array,
      letter:String,   
    },
    mounted() {
        this.scroll = new Bscroll(this.$refs.wrapper)
    },
    watch:{
      letter(){
     
        if(this.letter){
          const element = this.$refs[this.letter][0]
          console.log(element)
          this.scroll.scrollToElement(element)
        }
      }
    },
  }

</script>

<style scoped>
    .list{
        overflow: hidden;
        position: absolute;
        top: 1.55rem;
        left: 0;
        bottom: 0;
        right: 0;
        /* background-color: red; */
    }
  .border-topbottom::before {
    background-color: #ccc;
  }

  .border-topbottom::after {
    background-color: #ccc;
  }

  .title {
    line-height: 0.54rem;
    background-color: #eee;
    padding-left: 0.2rem;
    color: #666;
    font-size: 0.26rem;

  }

  .button-list {
    padding: 0.1rem 0.6rem 0.1rem 0.1rem;
    overflow: hidden;
  }

  .button-wrapper {
    float: left;
    width: 33.33%;
  }

  .button {
    margin: 0.1rem;
    padding: 0.1rem 0;
    border-radius: 0.06rem;
    text-align: center;
    border: 0.02rem solid #ccc;
  }
 .item-list .item{
     line-height: 0.76rem;
     padding-left: 0.2rem;
 }
 .border-bottom::before {
    background-color: #ccc;
  }

</style>
